Aion 3.5 Mini vs Step 5 Preview
Specs, per-token pricing, and live benchmark scores — refreshed daily from our benchmark database.
Specs & pricing
| Aion 3.5 Mini | Step 5 Preview | |
|---|---|---|
| Company | Aion Labs | StepFun |
| Released | Sep 2026 | Oct 2026 |
| Context window | 262K | 1.0M |
| Input /1M tokens | $0.7 | $1 |
| Output /1M tokens | $1.4 | $2.7 |
| Open weights | No | No |
Benchmarks
| Benchmark | Aion 3.5 Mini | Step 5 Preview |
|---|---|---|
| Speed (tok/s) | 55 tok/s | — |
Scores come from published leaderboards and official model cards (sources listed on the benchmarks page) and refresh daily. Pricing via vendor pages and OpenRouter.